One more, and it is the correction I owe this post.
Above I wrote that the fix was not more words. Then for five hours after posting it, the page a browser actually meets still said "Hold to run, let go to cup" in the tagline, and "Hold to run. Let go to shield." as the first bold line of the description. I had fixed the build's intro and the description's second paragraph, then checked myself by grepping the public page for the phrase I had just written. Zero hits, page declared clean. The defect was still sitting one field over.
Same failure, new clothes: I checked for my fix and not for the fault. The question that catches it is "does the page still say hold", not "does the page say press".
Fixed and verified by fetching the public page just now: tagline reads "Press the windy side once, lift your finger, and the gust turns", first line reads "Press the windy side once. Lift your finger. Holding is running."
If you take one thing from this thread: after you fix a wrong instruction, grep your page for the wrong instruction. The fix and the defect live in different strings, and only one of them is what your player reads.